P1122
Throttle Position Sensor Circuit Intermittent Low Voltage
P1122 is an OBD-II diagnostic trouble code meaning: Throttle Position Sensor Circuit Intermittent Low Voltage. Common causes: oxidation or damage to sensor contacts, open or shorted wiring harness. Estimated repair cost: $17–56.
Symptoms
- Unstable engine idling
- Dips during acceleration
- Reduced engine power
- Check Engine Light Intermittently Turning On
- Increased fuel consumption
Causes
- Oxidation or damage to sensor contacts
- Open or shorted wiring harness
- Malfunction of the throttle position sensor itself
- Problems with power supply to the sensor circuit
- Corrosion of connectors
How to Fix
- Check the condition of the sensor connectors and contacts
- Test the resistance and voltage in the sensor circuit
- Check the integrity of the wiring harness
- Replace the throttle position sensor if necessary
- Clean contacts and treat with protective compound
Related codes
Error P1122 by Vehicle Brand
FAQ
What does the P1122 code mean?
P1122 is an OBD-II diagnostic trouble code that indicates: Throttle Position Sensor Circuit Intermittent Low Voltage
What causes a P1122 error code?
The most common causes of P1122 include: Oxidation or damage to sensor contacts; Open or shorted wiring harness; Malfunction of the throttle position sensor itself; Problems with power supply to the sensor circuit.
How do I fix a P1122 diagnostic trouble code?
To fix P1122: Check the condition of the sensor connectors and contacts. Test the resistance and voltage in the sensor circuit. Check the integrity of the wiring harness. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P1122?
Limited driving only, diagnose soon
How much does it cost to fix P1122?
The estimated repair cost for P1122 is $17–56. Actual cost depends on your vehicle, location, and labor rates.
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